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HCD-GNX780/GNX880
SERVICE MANUAL
Ver. 1.1 2006.09
Mexican Model
· HCD-GNX780/GNX880 is the Amplifier, Disc player, tape deck and tuner section in MHC-GNX780/GNX880.
Photo: HCD-GNX880
Model Name Using Similar Mechanism CD Section CD Mechanism Type Base Unit Name Optical Pick-up Name TAPE Section Model Name Using Similar Mechanism Tape Transport Mechanism Type
HCD-GN880 CDM74KF-F1BD84 BU-F1BD84 KSM-215DCP/C2NP HCD-GNX80 CWN42FF601
SPECIFICATIONS
Amplifier section HCD-GNX880 The following are measured at Front/Surround speaker DIN power output (rated) Inputs VIDEO/MD (AUDIO) IN (phono jacks): voltage 250/450 mV, impedance 47 kiloohms TV (AUDIO) IN (phono jack): voltage 250 mV, impedance 47 kiloohms MIC (phone jack): sensitivity 1 mV, impedance 10 kiloohms Outputs VIDEO OUT (phono jack): max. output level 1 Vp-p, unbalanced, Sync negative, load impedance 75 ohms PHONES (stereo mini jack): accepts headphones of 8 ohms or more FRONT SPEAKER/SURROUND SPEAKER/ SUBWOOFER OUT: Use only the supplied speaker Continued on next page
AC 127 V, 60 Hz
180 + 180 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference) 225 + 225 watts (6 ohms at 1 kHz, 10% THD) Subwoofer Continuous RMS power output (reference) 200 watts (8 ohms at 100 Hz, 10% THD) HCD-GNX780 The following are measured at AC 127 V, 60 Hz Front speaker DIN power output (rated) 210 + 210 watts (4 ohms at 1 kHz, DIN) Continuous RMS power output (reference) 285 + 285 watts (4 ohms at 1 kHz, 10% THD)
MiNi Hi-Fi COMPONENT SYSTEM
9-887-130-02
2006I02-1 © 2006.09
Sony Corporation
Home Audio Division Published by Sony Techno Create Corporation
HCD-GNX780/GNX880
Disc player section System Laser
Laser Output
Frequency response Wave length Signal-to-noise ratio Dynamic range
Compact disc and digital audio system Semiconductor laser (=780 nm) Emission duration: continuous Max. 44.6 µW* * This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. 2 Hz 20 kHz (±0.5 dB) 780 790 nm More than 90 dB More than 90 dB
Notes on chip component replacement · Never reuse a disconnected chip component. · Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing · Keep the temperature of soldering iron around 270°C during repairing. · Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). · Be careful not to apply force on the conductor when soldering or unsoldering. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
OPTICAL CD DIGITAL OUT (Square optical connector jack, rear panel) Wave length 660 nm Output Level 18 dBm Tape deck section Recording system Frequency response
4-track 2-channel stereo 50 13,000 Hz (±3 dB), using Sony TYPE I tape
Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range 87.5 108.0 MHz Antenna FM lead antenna Antenna terminals 75 ohm unbalanced Intermediate frequency 10.7 MHz AM tuner section Tuning range 530 1,710 kHz (with the interval set at 10 kHz) 531 1,710 kHz (with the interval set at 9 kHz) Antenna AM loop antenna Antenna terminals External antenna terminal Intermediate frequency 450 kHz General Power requirements Power consumption MHC-GNX880 MHC-GNX780 Dimensions (w/h/d) (Approx.) Mass (Approx.) HCD-GNX880 HCD-GNX780
This appliance is classified as a CLASS 1 LASER product. This label is located on the rear exterior.
Unleaded solder Boards requiring use of unleaded solder are printed with the lead free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.)
: LEAD FREE MARK Unleaded solder has the following characteristics. · Unleaded solder melts at a temperature about 40°C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350°C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! · Strong viscosity Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. · Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.
127 V AC, 60Hz 350 watts 250 watts 281 × 362 × 404.5 mm 13.7 kg 12.0 kg
Design and specifications are subject to change without notice.
SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
HCD-GNX780/GNX880
TABLE OF CONTENTS 1. 2. 3.
3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 3-11. 3-12. 3-13. 3-14. 3-15. 3-16. 3-17. 3-18. 3-19.
SERVICING NOTES ................................................ 4 GENERAL
Locating the Controls ...................................................... 5
7.
7-1. 7-2. 7-3. 7-4. 7-5. 7-6. 7-7. 7-8. 7-9. 7-10. 7-11. 7-12. 7-13. 7-14. 7-15. 7-16. 7-17. 7-18. 7-19. 7-20. 7-21. 7-22. 7-23. 7-24. 7-25. 7-26. 7-27. 7-28.
DIAGRAMS
Block Diagram CDG Section ................................... Block Diagram Tape/Tuner Section ......................... Block Diagram Main Section ................................... Block Diagram AMP Section ................................... Block Diagram Display/Power Section .................... Printed Wiring Board BD84 Board .......................... Schematic Diagram BD84 Board ............................. Printed Wiring Boards CD Mechanism Sectiom ...... Schematic Diagram CD Mechanism Section ........... Printed Wiring Board MAIN Board ......................... Schematic Diagram MAIN Board (1/3) ................... Schematic Diagram MAIN Board (2/3) ................... Schematic Diagram MAIN Board (3/3) ................... Printed Wiring Board PANEL Board ....................... Schematic Diagram PANEL Board ........................... Printed Wiring Boards CD-SW, JOG, MIC and FUNCTION Boards ........... Schematic Diagram CD-SW, JOG, MIC and FUNCTION Boards ........... Printed Wiring Board PA Board ............................... Schematic Diagram PA Board .................................. Printed Wiring Board SURROUND Board .............. Schematic Diagram SURROUND Board ................. Printed Wiring Board EFFECTOR Board ................ Schematic Diagram EFFECTOR Board ................... Printed Wiring Board CDG Board ........................... Schematic Diagram CDG Board .............................. Printed Wiring Boards Power Section ...................... Schematic Diagram Power Section .......................... IC Pin Function Description ............................................ 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 58
DISASSEMBLY
Disassembly Flow ........................................................... Side Panel, Top Case ....................................................... Loading Panel .................................................................. Front Panel Assy .............................................................. Tuner Pack ....................................................................... Tape Mechanism Deck, MIC Board ................................ CD-SW Board, PANEL Board ........................................ FUNCTION Board, JOG Board ...................................... CD Mechanism Deck ...................................................... Back Panel ....................................................................... PRIMARY Board, EFFECTOR Board ............................ Power Amp PC Board Assy, MAIN Board ..................... SURROUND Board, PA Board ....................................... Power Transformer (T1200) ............................................ CDG Board, DRIVER Board, SW Board ....................... BD84 Board ..................................................................... SENSOR Board ............................................................... MOTOR (TB) Board ....................................................... MOTOR (LD) Board ....................................................... 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16
4. 5. 6.
TEST MODE .............................................................. 17 MECHANICAL ADJUSTMENTS ....................... 21 ELECTRICAL ADJUSTMENTS
Deck section .................................................................... 21 CDG Section .................................................................... 22
8.
8-1. 8-2. 8-3. 8-4. 8-5.
EXPLODED VIEWS
64 65 66 67 68 69
Case (Top), Back Panel Section ...................................... Front Panel Section-1 ...................................................... Front Panel Section-2 ...................................................... Chassis Section ................................................................ CD Mechanism Deck Section-1 (CDM74KF-F1BD84) ..................................................... 8-6. CD Mechanism Deck Section-2 (CDM74KF-F1BD84) .....................................................
9.
ELECTRICAL PARTS LIST ................................ 70
3
HCD-GNX780/GNX880 SECTION 1 SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION CHECK Carry out the "S curve check" in "CD section adjustment" and check that the S curve waveform is output several times.
4
HCD-GNX780/GNX880 SECTION 2 GENERAL
LOCATING THE CONTROLS This section is extracted from instruction manual.
Main unit
ALPHABETICAL ORDER AD MR SYMBOLS
ALBUM +/ ql AMP MENU ed CD r; CD SYNC qf Deck A ef Deck B ws DELAY ea DIRECTION wd DISC 1 ~ 3 1 Disc tray qs DISPLAY 6 Display q;
EL
MASTER VOLUME wk MIC 1/2 (jack) wl MIC 1/2 LEVEL wj MP3 BOOSTER qa OPEN/CLOSE 3 OPERATION DIAL 4 PHONES (jack) es Power illuminator 9 REC PAUSE/START qd
SZ
?/1 (power) rs Z OPEN/CLOSE 3 N (play) qg >/. (forward/go backward) qk M/m (fast forward/rewind) ql X (pause) qh x (stop) qj A Z (Eject A) eg B Z (Eject B) wa
1) For 2)
ECHO LEVEL wh ENTER wg EQ BAND wf EX-CHANGE/DISC SKIP 2 FLANGER 7 GROOVE w; ILLUMINATION 5 IR Receptor ra KARAOKE wd
SOUND FLASH e; SURROUND1) 8 SURR SPEAKER MODE2) 8 TAPE A/B ek Tape lid ws ef TUNER/BAND el TUNING +/ qk TV ej VIDEO/MD eh
MHC-GNX780 For MHC-GNX880
Top Panel
1
2 3
4
Front Panel
5 6 7 8 9 q; qa qs
rs ra r; el ek ej eh eg ef ed
qd qf qg qh qj qk ql w; wa ws wd wf
es
eae;wl wkwj wh
wg
5
HCD-GNX780/GNX880
This section is extracted from instruction manual.
Remote control
ALPHABETICAL ORDER AE
ALBUM + qf ALBUM qh CD wf CLEAR qk CLOCK/TIMER SELECT 2 CLOCK/TIMER SET 4 DISC SKIP qd DISPLAY wh ENTER qs EQ qj
F Z
TAPE wd TUNER/BAND 7 TUNER MEMORY wg TUNING MODE 5 VOLUME +/ qg The + button has a tactile dot.*
SYMBOLS
wh wg wf wd ws wa w; ql qk qj qh
1
2
3
?/1 (power) 3 x (stop) qa X (pause) ql N (play) w; . (go backward) ws >+ (go forward) wa m (rewind) q; M (fast forward) 9 * Use the tactile dot as a reference when operating the system.
4 5 6 7 8 9 q; qa qs qd qf qg
FM MODE 6 FUNCTION 8 PLAY MODE 5 REPEAT 6 SLEEP 1
Setting the clock
Use buttons on the remote for the operation.
1 2 3 4 5 6
Press ?/1 to turn on the system. Press CLOCK/TIMER SET.
"CLOCK" appears in the display. Then, the hour indication flashes in the display.
Press . or >+ repeatedly to set the hour. Press ENTER.
The minute indication flashes in the display.
Press . or >+ repeatedly to set the minute. Press ENTER.
The clock starts functioning.
To adj ust the c lock
1 Press CLOCK/TIMER SET.
"SET" appears in the display, then "PLAY SET?" flashes in the display.
2 Press . or >+ repeatedly to select
"CLOCK SET?", then press ENTER. The hour indication flashes in the display.
3 Do the same procedures as step 3 to 6
above.
Not e s
The clock settings are canceled when you disconnect the power cord or if a power failure occurs. You cannot set the clock in Power Saving Mode .
6
HCD-GNX780/GNX880 SECTION 3 DISASSEMBLY
· This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SET
3-2.SIDE PANEL, TOP CASE (Page 8)
3-3.LOADING PANEL (Page 8)
3-4.FRONT PANEL ASSY (Page 9)
3-5.TUNER PACK (Page 9)
3-6.TAPE MECHANISM DECK, MIC BOARD (Page 10)
3-7.CD-SW BOARD, PANEL BOARD (Page 10)
3-9.CD MECHANISM DECK (Page 11)
3-8.FUNCTION BOARD, JOG BOARD (Page 11)
3-10.BACK PANEL (Page 12)
3-15.CDG BOARD, DRIVER BOARD, SW BOARD (Page 14)
3-17.SENSOR BOARD (Page 15)
3-16.BD84 BOARD (Page 15)
3-18.MOTOR (TB) BOARD (Page 16)
3-12.POWER AMP PC BOARD ASSY, MAIN BOARD (Page 13)
3-11.PRIMARY BOARD EFFECTOR BOARD (Page 12)
3-14.POWER TRANSFORMER (T1200) (Page 14)
3-13.SURROUND BOARD, PA BOARD (Page 13)
3-19.MOTOR (LD) BOARD (Page 16)
7
HCD-GNX780/GNX880
Note: Follow the disassembly procedure in the numerical order given.
3-2. SIDE PANEL, TOP CASE
7 two screws (case 3 TP2) (3×12) qd CASE (TOP) 8 two screws (+BVTP 3×10) qa two screws (+BVTP 3×12) qs
9
0 PANEL (SIDE-L)
6 screw (case 3 TP2) (3×8)
2 two screws (case 3 TP2) (3×12)
4
3 two screws (+BVTP 3×10) 5 PANEL (SIDE-R)
3-3. LOADING PANEL
1 screw (case 3 TP2) (3×8)
CD mechanism deck (CDM74KF-F1BD84) 1 Turn the pulley to the arrow direction.
4 loading panel
Pulley
3
Front side
2 Pull out disc tray
8
HCD-GNX780/GNX880
3-4. FRONT PANEL ASSY
8 wire (flat type) (CN509) 4 screw (+BVTP 3×10) 7 wire (flat type) (CN508)
6 connector (CN100)
3 screw (+BVTP 3×10)
5 front panel assy q; connector (CN1102)
qa connector (CN507) 2 three screws (+BVTP 3×10)
9 connector (CN503)
1 three screws (+BVTP 3×10)
3-5. TUNER PACK
2 wire (flat type) (CN1) 3 tuner pack
1 two screws (+BVTP 3×6)
9
HCD-GNX780/GNX880
3-6. TAPE MECHANISM DECK, MIC BOARD
1 three screws (+BVTP2.6 (3CR))
2 two screws (+BVTP2.6 (3CR)) 3 tape mechanism deck
4 three screws (+BVTP2.6 (3CR))
5 bracket (MIC)
6 knob (MIC)
7 MIC board
3-7. CD-SW BOARD, PANEL BOARD
2 Pull up the bracket portion of button (DISC) in the arrow A direction and pull out CD-SW board in the arrow B direction.
button (DISC) button (DISC) bracket portion
B
bracket portion
4 three screws (+BVTP2.6 (3CR)) 5 three screws (+BVTP2.6 (3CR)) A
CD-SW board (side view)
A
CD-SW board
1 two screws (+BVTP2.6 (3CR))
button (DISC)
B 3 CD-SW board 8 PANEL board 7 wire (flat type) (CN902)
6 wire (flat type) (CN900)
10
HCD-GNX780/GNX880
3-8. FUNCTION BOARD, JOG BOARD
3 FUNCTION board
2 nine screws (+BVTP2.6 (3CR)) 7 JOG board 6 two screws (+BVTP2.6 (3CR)) 4 knob jog assy
5 two screws (+BVTP2.6 (3CR)) 1 knob vol
3-9. CD MECHANISM DECK
2 CD mechanism deck 3 wire (flat type) (CN505) 1 two screws (+BVTP 3×8)
4 wire (flat type) (CN701)
6 wire (flat type) (CN504)
5 connector (CN560)
MAIN board
11
HCD-GNX780/GNX880
3-10. BACK PANEL
8 back panel
3 wire (flat type) (CN1501)
2 connector (CN1204)
5 two screws (+BVTP 3×12) 4 five screws (+BVTP 3×10)
1 connector (CN1200) 9 connector (CN580) 7 two screws (+BVTP 3×12) 6 two screws (GNX880) screw (GNX780) (+BVTP 3×10)
3-11. PRIMARY BOARD, EFFECTOR BOARD
1 connector (CN101)
4 PRIMARY board
5 two screws (+BVTP 3×10)
3 screw (+BVTP 3×8) 2 connector (CN201)
6 EFFECTOR board
12
HCD-GNX780/GNX880
3-12. POWER AMP PC BOARD ASSY, MAIN BOARD
4 two screws (+BV3 (3-CR))
5 screw (+BV3 (3-CR)) 7 power AMP PC board assy
3 screw (+BV3 (3-CR)) 6 screw (+BVTP 3×10)
(GNX880)
1 connector (CN1213) 8 connector (CN105)
2 connector (CN1212)
q; screw (+BVTP 3×10) qa MAIN board 9 two screws (+BVTP 3×10)
3-13. SURROUND BOARD, PA BOARD
3 SURROUND board
1 two screws (+BVTP 3×10)
0 heat sink 5 two screws (+BVTP 3×10) qs bracket
2 two screws (transistor)
(GNX880)
qa screw (+BVTP 3×10) 6 holder qd PA board 8 two screws (transistor)
4 connector (CN607)
(GNX880)
9 two screws (+BVTP 3×10)
7 three screws (+BVTP 3×10)
13
HCD-GNX780/GNX880
3-14. POWER TRANSFORMER (T1200)
TRANS board
1 connector (CN1213)
5 power transfomer (T1200)
4 two screws
2 connector (CN1212)
3 two screws
3-15. CDG BOARD, DRIVER BOARD, SW BOARD
1 two screws (+BVTP 3×10)
2 CDG board
4 cover (CDM)
3 three screws (+BVTP 3×10)
5 two screws (+BTTP (M2.6)) 8 DRIVER board 7 connector (CN703)
9 screw (+BTTP (M2.6)) 0 SW board
6 wire (flat type) (CN702)
14
HCD-GNX780/GNX880
3-16. BD84 BOARD
1 floating screw (+PTPWH M2.6) 6 two insulators
2 holder (213) ASSY qh optical pick-up (KSM-215DCP/C2NP) 0 two insulators 9 two coil springs (insulator) 8 two stoppers (BU) 7 two screws (+BTTP (M2.6))
qa
5 two coil springs (insulator) 3 screw (+BTTP (M2.6)) 4 floating screw (+PTPWH M2.6) qf CN101 (flat type) qg BD84 board
qd Remove the four solderings of motor.
qs screw (+BVTP 2.6 (3CR))
3-17. SENSOR BOARD
1 floating screw (+PTPWH M2.6) 2 tray 8 screw (+BTTP (M2.6)) 3 belt (table) 0 SENSOR board 4 floating screw (+PTPWH M2.6) 5 pulley (table)
6 floating screw (+PTPWH M2.6) 7 gear (geneva)
9 connector (CN731)
15
HCD-GNX780/GNX880
3-18. MOTOR (TB) BOARD
2 stopper
4
1 stopper 7 table motor assy (M741)
3 wire (flat type) 5 core (CN742) 8 MOTOR (TB) board 6 Remove the two solderings of motor. 5 two screws (+BTTP (M2.6))
3-19. MOTOR (LD) BOARD
2 two screws (+BTTP (M2.6)) 4 Remove the two solderings of motor. 3 MOTOR (LD) board
5 loading motor assy (M751)
1 belt (loading)
16
HCD-GNX780/GNX880 SECTION 4 TEST MODE
[GC TEST MODE] · This mode is used to check the fluorescent indicator tube, LEDs, keys, VOLUME jog, OPERATION DIAL jog, AMS jog, destination, software version and VACS level. Procedure: 1. Press x button, [ENTER] button and [DISC 2] buttonsimultaneously. 2. All LEDs and segments in fluorescent indicator tube are lighted up. All LEDs are lighted up in red color. 3. When you want to enter the software version display mode, press [DISC 1] button. The model is displayed. Press [DISC 1] button again to show destination. 4. Each time [DISC 1] button is pressed, the display changes from MC version, GC version, SYS version, CD version, CDDM version, CDMA version, CDMB version, BDA version, BDB version, ST version, TC version, TA version, TM version in this order, and returns to the MC version display. 5. When [DISC 3] button is pressed while the version numbers are being displayed except model and destination, the date of the software creation appear. When [DISC 3] button is pressed again, the display returns to the software version display. When [DISC 1] button is pressed while the date of the software creation is being displayed, the date of the software creation is displayed in the same order of software version display. 6. Press [DISC 2] button, the key check mode is activated. 7. In the key check mode, the fluorescent indicator tube displays "K 0 V0J0". Each time a button is pressed, "K" value increases. However, once a button has been pressed, it is no longer taken into account. "V" value increases in the manner of 0,1, 2, 3 ... if [VOLUME] knob is turned clockwise, or it decreases in the manner of 0, 9, 8, 7 ... if [VOLUME] knob is turned counter-clockwise. "J" value increases in the manner of 0,1, 2, 3 ... if [OPERATION DIAL] knob is turned clockwise, or it decreases in the manner of 0, 9, 8, 7 ... if [OPERATION DIAL] knob is turned counterclockwise. 8. When [DISC 3] button is pressed after all LEDs and segments in fluorescent indicator tube light up, the fluorescent indicator tube displays "VACS A+B FAPC". A is VACS level which is trigger by signal level, B is VACS level which is trigger by temperature and C is VACS level which is trigger by APVACS (Abuse Protection VACS). F is shown if the fan is turned in high speed and vice-versa. The signal level, which will trigger VACS A is shown in the center area of fluorescent indicator tube. 9. When [EX-CHANGE/DISC SKIP] button is pressed after all LEDs and segments in fluorescent indicator tube light up, alternate segments in fluorescent indicator tube would light up. If you press [EX-CHANGE/DISC SKIP] button again, another half of alternate segments in fluorescent indicator tube would light up. Pressing [EX-CHANGE/DISC SKIP] button again would cause all segments lights up. 10. To release this mode, press three buttons in the same manner as step 1, or disconnect the power cord. [MC TEST MODE] · This mode is used to check operations of the respective sections of Amplifier, Tuner, and Tape. Procedure: * To enter MC Test Mode 1. Press x button, [ENTER] button and [DISC 3] button simultaneously. 2. The CD ring indicators TAPE A and B indicators flash on the fluorescent indicator tube. The function is changed to TV. * Check of Amplifier 1. Press [EQ BAND] button repeatedly until a message "GEQ MAX" appears on the fluorescent indicator tube. GEQ increases to its maximum. 2. Press [EQ BAND] button repeatedly until a message "GEQ MIN" appears on the fluorescent indicator tube. GEQ decreases to its minimum. 3. Press [EQ BAND] button repeatedly until a message "GEQ FLAT" appears on the fluorescent indicator tube. GEQ is set to flat. 4. When the [VOLUME] knob is turned clockwise even slightly, the sound volume increases to its maximum and a message "VOLUME MAX" appears on the fluorescent indicator tube. 5. When the [VOLUME] knob is turned counter-clockwise even slightly, the sound volume decreases to its minimum and a message "VOLUME MIN" appears on the fluorescent indicator tube. * Tape function 1. When a tape is inserted in Deck B and recording is started, the function is changed to TV automatically. When [CD SYNC] button is pressed during recording in function, ALC (Automatic Logic Control) is turned on. 2. During recording, press m will stop the recording and the function is changed to TAPE B and rewind the tape in Deck B until the recording start position and playback of the tape in Deck B is started. If the [REC PAUSE/ START] button is pressed for a pause and pressed again to resume recording during recording time, when the tape is rewind, the tape will be rewind until the position where the pause is applied. * To release MC Test mode. 1. To release this mode, press ?/1 button. 2. The cold reset is enforced at the same time.
[COLD RESET] · The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer. Procedure: 1. Press x button, [ENTER] button, and ?/1 button simultaneously. 2. The fluorescent indicator tube becomes blank for a while, and the set is reset.
17
HCD-GNX780/GNX880
[VACS ON/OFF] · This mode is used to switch ON and OFF the VACS (Variable Attenuation Control System). Procedure: 1. Press ?/1 button to turn the set ON. 2. Press x button and [ILLUMINATION] button simultaneously. The message "VACS OFF" or "VACS ON" appears on the fluorescent indicator tube. [TUNER STEP CHANGE] · The step interval of AM channels can be toggled between 9 kHz and 10 kHz. Procedure: 1. Press ?/1 button to turn the set ON. 2. Press [TUNER/BAND] button to select the "AM". 3. Press ?/1 button to turn the set OFF. 4. Press [ENTER] button and ?/1 button simultaneously. The system will turn ON automatically. The message "AM 9k STEP" or AM 10k STEP" appears on the fluorescent indicator tube and thus the channel step is changed. [CD SERVICE MODE] · This mode let you move the CD sled motor freely. Use this mode when you want to clean the optical pick-up. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select CD function. 3. Press x , [ENTER] button, and Z OPEN/CLOSE button simultaneously. 4. The CD service mode is activated. The message "SERVICE MODE" appears on the fluorescent indicator tube. 5. With the CD in stop status, press M to move the optical pick-up to outside track, or press m to move to inside track. The message "SLED OUT" or "SLED IN" appears on the fluorescent indicator tube. 6. To turn on or off the laser, press [DIRECTION] button. The message "LD ON" or "LD OFF" appears on the fluorescent indicator tube. 7. To release this mode, press ?/1 button.
[CD AGING MODE] This mode can be used for operation check of CD section. · If an error occurs, the aging operation would stops and the status is displayed. · If there are no error occurs, the aging operation would continues repeatedly. Procedure: 1. Press ?/1 button to turn the set ON 2. Select CD function. 3. Load three discs on the disc tray. 4. Press [PLAY MODE] button on the remote repeatedly to select the "ALL DISCS" mode, and press the [REPEAT] button on the remote repeatedly to select "REPEAT OFF" mode. 5. Press x button, [ENTER] button, and [EX-CHANGE/DISC SKIP] button simultaneously. 6. Aging operation is started. 7. To release this mode, press ?/1 button or disconnect the power cord to turn the power OFF. Aging mode sequence:
Start (from disc 1)
Disc chucking
TOC reading
Play first track for 2 seconds
Play last track for 2 seconds
EX-CHANGE open/close
Open the disc tray
Disc skip
Close the disk tray
Change the next disc
18
HCD-GNX780/GNX880
· Display when an error occurred (CD Error Code Mode) Procedure: 1. Press x button, [ENTER] button and [DISC 1] button simultaneously to enter the error code display mode. 2. The fluorescent indicator tube displays the number of total error. 3. Each time m M knob is rotated, display change as below.
Display of total error
> + direction . direction
3) Display of no disc errors
Display
D*$$%%&&##00
D*: The number of mechanical error ("00" is latest one) (Rotate . > knob in the direction of either to display next error) $$: Error type 01: Focus error 02: GFS error 03: Setup error %%: Not used &&: 00: No disc judgment without chucking retry. 01: No disc judgment after chucking retry. ##: The state when judged as no disc 01: Stop 02: Setup 03: TOC reading 04: Access 05: Playback 06: Pause 07: Manual search (Play) 08: Manual search (Pause)
Display of Mechanical errors
> + direction . direction
Display of no disc errors
4. To clear the error record, operate the cold reset. (Refer to the "MC COLD RESET") 5. To release this mode, press the ?/1 button or disconnect the power plug to turn the power OFF. 1) Display of total error
Display
Em**Ed**
Em**: The number of mechanical errors. Ed **: The number of no disc errors after chucking the disc. 2) Display of mechanical errors
Display
[CD REPEAT 5 LIMIT OFF MODE] · The number of repeat for CD playback is 5 times when the repeat mode is "REPEAT ALL". This mode enables CD to repeat playback for limitless times. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select CD function. 3. Press x button, [CD] button and [DISC 1] button simultaneously to enter the CD repeat 5 limit off mode and the fluorescent indicator tube displays "LIMIT OFF". 4. To release this mode, operate the cold reset. (Refer to the "MC COLD RESET") [CD SHIP MODE (WITH MEMORY CLEAR)] · This mode moves the optical pick-up to the position durable to vibration and clears all data including preset data stored in the RAM to initial conditions. Use this mode when returning the set to the customer after repair. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select CD function. 3. Press x button, [SOUND FLASH] button and ?/1 button simultaneously. The set will power off automatically. 4. After the "STANDBY" blinking display finish, a message "MECHA LOCK" is displayed on the fluorescent indicator tube and the CD ship mode is set.
M*$$%%&&##00
M*: The number of mechanical error ("00" is latest one) (Rotate . > knob in the direction of either to display next error) $$: Not used %%: Loading related error (Second figure is not used) D: Stop by the problem other than mechanical problem while closing. E: Stop by the problem other than mechanical problem while opening. C: Stop by the problem other than mechanical problem while chucking up. F: Stop by the problem other than mechanical problem while chucking down. &&: Emerging error 01: Stop while chucking up. 02: Stop while chucking up. 03: Time-out of EX-CHANGE open. 05: Time-out of EX-CHANGE close. ##: Not used
19
HCD-GNX780/GNX880
[CD SHIP MODE (WITHOUT MEMORY CLEAR)] · This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select CD function. 3. Press [CD] button and ?/1 button simultaneously. The set will power off automatically. 4. After the "STANDBY" blinking display finish, a message "MECHA LOCK" is displayed on the fluorescent indicator tube and the CD ship mode is set. [CD POWER MANAGE] · This mode let you switch on or off power supply to the BU during TUNER function. · When CD POWER is set to OFF, the power supply to the BU is cut off during TUNER function. It will increase the time taken to access CD when function change from TUNER to CD but it will improve tuner reception. · When CD POWER is set to ON, the power supply to the BU is not cut off during TUNER function. It will reduce the time taken to access CD when function change from TUNER to CD but it will decrease tuner reception performance. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select CD function. 3. Press ?/1 button to turn the set OFF. 4. Press x button and ?/1 button simultaneously. The set will power on automatically. 5. The message "CD POWER ON" or "CD POWER OFF" will be displayed on the fluorescent indicator tube.
[CD TRAY LOCK MODE] · This mode let you lock the disc trays. When this mode is activated, the disc tray will not open when Z OPEN/CLOSE button or [EX-CHANGE/DISC SKIP] button is pressed. The message "LOCKED" will be displayed in the will be displayed on the fluorescent indicator tube. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select CD function. 3. Press x button and Z OPEN/CLOSE button simultaneously and hold down until "LOCKED" or "UNLOCKED" displayed on the fluorescent indicator tube (around 5 seconds). [VIDEO/MD SWITCHING] · This mode let you switch from VIDEO to MD and vice-versa. Procedure: 1. Press ?/1 button to turn the set ON. 2. Select VIDEO function. 3. Press [VIDEO/MD] button and ?/1 button simultaneously. The function will change to MD. Press the same buttons again to change from MD to VIDEO. [TCM OFFLINE MODE] · This mode prevents set from power off automatically when TCM is not connected. Therefore, measurements can be done even when TCM is not connected during production. · Procedure: 1. When the system in turned off, press [EQ BAND] button, [TAPE A/B] button and ?/1 button simultaneously. The set will power on automatically. 2. The message "TCM OFFLINE" will be displayed on the fluorescent indicator tube.
20
HCD-GNX780/GNX880 SECTION 5 MECHANICAL ADJUSTMENTS
Precaution 1. Clean the following parts with a denatured alcohol-moistened swab: record/playback heads pinch rollers erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Torque Measurement
Mode FWD Torque meter CQ-102C Meter reading 2.9 mN · m to 6.9 mN · m 30 to 70 g · cm (0.42 0.97 oz · inch) 0.15 mN · m to 0.59 mN · m 1.6 to 6 g · cm (0.022 0.08 oz · inch) 4.8 mN · m to 16.7 mN · m 49 to 170 g · cm (0.69 2.36 oz · inch)
SECTION 6 ELECTRICAL ADJUSTMENTS
DECK SECTION 0 dB=0.775 V
1. Demagnetize the record/playback head with a head demagnetizer. 2. Do not use a magnetized screwdriver for the adjustments. 3. After the adjustments, apply suitable locking compound to the parts adjust. 4. The adjustments should be performed with the rated power supply voltage unless otherwise noted. 5. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.) 6. The adjustments should be performed for both L-CH and RCH. 7. Switches and controls should be set as follows unless otherwise specified. · Test Tape Tape P-4-A100 Signal 10 kHz, 10 dB Used for Azimuth Adjustment
FWD back tension
CQ-102C
FF/REW
CQ-201B
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
DECK A
DECK B
Note: Perform this adjustments for both decks
Procedure: 1. Mode: Playback
test tape P-4-A100 (10 kHz, 10 dB) MAIN board CN510 Pin 1 (L-CH) Pin 3 (R-CH) level meter set MAIN board CN510 Pin 2 (GND) +
21
HCD-GNX780/GNX880
2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.
CDG SECTION
Note:
L-CH peak Output level
within 1dB within 1dB
1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10M impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. S-curve Check Connection:
Screw position
R-CH peak L-CH peak R-CH peak
Screw position
CD board JPO102 (FE1) TP117 (VC)
oscilloscope
3. Mode: Playback
test tape P-4-A100 (10 kHz, 10 dB) L-CH MAIN board CN510 set R-CH pin 3 waveform of oscilloscope
+
oscilloscope pin 1 pin 2 L R V H
Procedure: 1. Connect an oscilloscope to test point JPO102 (FE1) and TP 117(VC) on the CD board. 2. Turn the power on. 3. Put the disc (YEDS-18) in and turned power switch on again and actuate the focus search. (actuate the focus search when disc table is moving in and out) 4. Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2.4 ± 1 Vp-p.
S-curve waveform
symmetry
in phase 45 ° good
90 ° 135 ° 180 ° wrong
4. After the adjustments, apply suitable locking compound to the pats adjusted. Adjustment Location: Playback Head (Deck A). Record/Playback/Erase Head (Deck B).
A B
within 2.4 ± 1 Vp-p
Note: · Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7. · Take sweep time as long as possible and light up the brightness to obtain best waveform. Checking Location: CD board (SIDE B) (See page 24.)
azimuth screw
22
HCD-GNX780/GNX880
RFAC Level Check Connection:
oscilloscope CD board TP124 (RFAC) TP117 (VC)
+
E-F Balance Check Connection:
oscilloscope CD board JPO103 (TE1) TP117 (VC)
+
Procedure: 1. Connect an oscilloscope to test point TP124 (RFAC) and TP 117(VC) on the CD board. 2. Turn the power on. 3. Put the disc (YEDS-18) in to playback the number five track. 4. Confirm that oscilloscope waveform is clear and check RFAC signal level is correct or not.
Note: A clear RFAC signal waveform means that the shape "" can be clearly distinguished at the center of the waveform.
RFAC signal waveform VOLT/DIV: 200 mV TIME/DIV: 500 ns
level: 0.9 ± 0.4 Vp-p
Procedure: 1. Connect an oscilloscpe to test point TPO103 (TE1) and TP117 (VC) on the CD board. 2. Turn the power on. 3. Select the function "CD". 4. Press three buttons of [ENTER], M , and [SURRUUND MODE] simultaneously to set the CD service mode. 5. Put the disc (YEDS-18) in to playback the number five track. 6. Press the . button. The message "TRAVERSE" is displayed. (The tracking servo and the sledding servo are turned OFF) 7. Check the level B of the oscilliscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than ± 22%
Traverse Waveform
Center of the waveform B
Checking Location: CD board (SIDE B) (See page 24.)
0V
A (DC voltage) level: 1.0 ± 0.5 Vp-p
8. Press the . button. The message "TRAVERSE" is displayed. (The tracking servo and sledding servo are turned ON) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 5. 9. To exit from this mode, perform as follows. 1) Move the optical pick-up to the most inside track. 2) Press three buttons of x , [CLEAR], and [DISPLAY] simultaneously. (cold reset)
Notes:
· Always move the optical pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded. · Do not run the sled motor excessively, otherwise the gear can be chipped.
Traverse Waveform
0V Tracking servo Sled servo OFF Tracking servo Sled servo ON
C (DC voltage)
Checking Location: CD board (SIDE B) (See page 24.)
23
HCD-GNX780/GNX880
Checking Location: BD84 BOARD (SIDE B)
TP117 (VC) JPO103 (TE1)
IC101 JPO102 (FE1)
TP124 (RFAC)
24
HCD-GNX780/GNX880 SECTION 7 DIAGRAMS
For schematic diagrams. Note: · All capacitors are in µF unless otherwise noted. (p: pF) 50 V or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. · % : indicates tolerance. · f : internal component. · 2 : nonflammable resistor. · 5 : fusible resistor. Note: The components identified by mark 0 or dotted line with mark ! are critical for safety. Replace only with part number specified. C : panel designation. A : B+ Line. B : B Line. H : adjustment for repair. Voltages and waveforms are dc with respect to ground under no-signal conditions. BD84 board no mark: CD PLAY Other boards no mark: TUNER (FM/AM) ( ) : CD PLAY < > : TAPE PLAY [ ] : TAPE REC * : Impossible to measure · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. · Signal path. F : TUNER (FM/AM) E : TAPE PLAY (DECK A) d : TAPE PLAY (DECK B) G : RECORD J : CD PLAY N : MIC INPUT c : CDG g : VIDEO · · · · · Note on Printed Wiring Boards: Note: · X : parts extracted from the component side. · : Pattern from the side which enables seeing. (The other layers' patterns are not indicated.) Caution: Parts face side: (Side A) Pattern face side: (Side B)
Parts on the parts face side seen from the parts face are indicated. Parts on the pattern face side seen from the pattern face are indicated.
· Indication of transistor.
C Q B E These are omitted.
Q B C E These are omitted.
Q B C E These are omitted.
25
HCD-GNX780/GNX880
· CIRCUIT BOARDS LOCATION
PRIMARY board CDG board TUNER PACK
CD-SW board
EFFECTOR board SWITCHING POWER
TRANS board
SURROUND board
PA board
SENSOR board
SW board MOTOR (LD) board
BD84 board MOTOR (TB) board
DRIVER board
PANEL board
FUNCTION board
JOG board
MAIN board MIC board
26
HCD-GNX780/GNX880
7-1. BLOCK DIAGRAM CDG SECTION
AOUT1 81
CD-L
A
IC210
MAIN SECTION (Page 29)
OPTICAL PICK-UP BLOCK (KSM-215DCP/C2NP)
DETECTOR VCC VC A B C D E F +3.3V
AOUT2 86
R-CH
CD MUTE Q250,251 CD MUTE DRIVE Q540, 541
IC101
RF AMP, DSP, DAC DOUT 71
OPTICAL OUT
IC301
25 VC 26 A 27 B 28 C 29 D 19 E 20 F PCMD1 61 LRCKI 62 LRCK 63 PCMD 65 BCK 66 BCK1 60 11 SDO0 16 LRCKIA 19 SFSY/LRCK1B 14 SDI0 15 BCKIA 18 SBSY/BCK1B MP3 DECODER
CD DIGITAL OUT OPTICAL
IC303
VDD 55 VDD 21 VDDM 40 5 REG 1 +3.3V
IC701
STANBY 3
LD
LD DRIVER Q10
36 LD
PO11/BUCK/AD1 36 MIACK 8 MICK 7 MIDIO 6 MILP 5 XTACN 95 XTCN XRST DATA XLT CLOCK SENS SCOR MICS 4 RESET 2 SRMSTB 41
MP3 STB MP3 REQ MP3 ACK MP3 CLK MP3 DATA MP3 LP MP3 CS MP3 RST
TABLE LOADING MOTOR DRIVER
27 MP3 STB 26 MP3 REQ 25 MP3 ACK 7 MP3 CLK 5 MP3 DATA OUT 24 MP3 LP 23 MP3 CS 22 MP3 RST 6 MP3 DATA IN 19 SCOR 21 SENS 18 CD-CLK 3 XLAT 2 CD-DATA 1 XRST 28 XTCN
LMR 46 LMF 45 TM-R 44 TM-F 43 TBL_SENS 39 E-1 42 E-2 41 E-3 40 OPEN SW 38
9 RIN 7 FIN
OUT1 4 OUT2 2
M
GND X171 16.9MHz
M751 (TABLE LOADING) M741 (TABLE)
77 XTAO 78 XTAI
IC712
TABLE MOTOR DRIVER 9 RIN 7 FIN OUT1 4 OUT2 2
M
PD VR
37 PD
XRST 100 DATA 102 XLAT 104 CLOCK 105 SENS 107 SCOR 115 GFS 113 NC C2PO 114 NC
M+9V
IC251
SL/SP MOTOR DRIVER F+ OUT 12 CH2OUT-F VREF 26 CH1FIN 4 11 CH2OUT-R CH1RIN 5 13 CH1OUT-R CH2FIN 6 14 CH1OUT-F CH2RIN 7 15 CH4OUT-R 14 FRDR 13 FFDR 12 TRDR
SCOR SENS CLOCK XLT DATA XRST XTCN
IC731
TBL ADDRESS SENS
FOCUS COIL
F T+
11 TFDR
IC401 (1/5)
SYSTEM CONTROL
INVERTER Q731
S711
RESET 12 IIC-DATA 30
CD POWER
CDG RST
VMUTE
T
37 CD MUTE
CNVSS
TRACKING COIL
CDG DET
IIC-CLK 29
E-3 ROTARY E-2 ENCODER E-1
35
33 31 32 9
S751 (OPEN)
RESET IIC-DATA
HALT_CLK
CDG-RST
CDG-DET
VMUTE
16 CH4OUT-F CH3RIN 22 17 CH3OUT-F 10 SRDR 6 MPD 100 XRST
5 1 13
CNVSS
M101 M (SPINDLE)
CH3FIN 23
9 SFDR
MUTE DATA
CDG-POWER
IC1005
6 2 9 3 8 4 10
IC1001 VIDEO D/A Q1005,1009 4 SBSY 5 SFSY 3 DATA 2 CLCK MUTE 6 MUTE DATA Q1004 PAL/_NTSC Q1002,1006 Q1001 EVER+3.3V CDG-DET HALT_CLK
IIC-CLK NO402 IC1003 +5V REG. 3 4 IIC-CLK IIC-DATA
B
DISPLAY/POWER SECTION (Page 31)
M102 (SLED)
M
18 CH3OUT-R
OPIN+ 2 MUTE 20
WFCK 110 SBSO 98
PDOWN 56 SENTSC 55 RESET 54 DEN 52 GDET 37
12 11
VCC CDG-RST CDG-POWER
+B SWITCH Q1007,1008
1 VIN
VOUT 3 VMUTE CDG/_BGC CDG/-DET J1001 VIDEO OUT CDG/-POWER CNVSS
S101 (LIMIT)
7 SSTP
EXCK 99 IC1002 DRAM
Q1010 VMUTE
IC1006 VIDEO BUFFER 1 PWR 4 VIN VCC 6 SAVE 2 VOUT 3
CN402 2 TXD1 3 6 7 8 9 RTS1 CLK1 RXD1 CN VSS RESET ON BOARD PROGRAM
9-12,14-17 1,2,24,25
25,27,29,30
DQ1-4
VD0-3
VDOUT 44
15-22
A0-7 RAS CAS WE CE
VA0-7
XO1
XO2
4 23 3 22
14 26 13 28
RAS CAS WE CE
XI1
· R-CH is omitted due to same as L-CH. · SIGNAL PATH
59 58 57
XI2
: CD : CDG : VIDEO
60
X1002 X1001 14.31818MHz 17.734475MHz
HCD-GNX780/GNX880
27
27
HCD-GNX780/GNX880
Ver. 1.1 7-2. BLOCK DIAGRAM TAPE/TUNER SECTION
DECK-A L CH PB HEAD R CH R-CH SWITCH DRIVE Q382, 383 34 32 AIN1 A B BIN1 EQ OUT1 TAI1 PB OUT1 TC-PB-L CN510 L R-CH R TEST CONNECTOR
28
27
26
C
MAIN SECTION
(Page 29)
DECK-B L CH REC/PB HEAD R CH R-CH
Q376 Q373, 374
IC301
Q381 SWITCH DRIVE Q377, 379 21 REC-OUT1 EQ DECK A/B SELECT, PB/REC EQUALIZER AMP
C380, L371 R-CH BIAS TRAP
REC IN1
REC MUTE ON/OFF MUTE ON/OFF
24
REC-OUT-L
D
MAIN SECTION (Page 29)
ALC ON/OFF
IC401(2/5)
SYSTEM CONTROL (CD/TAPE MECHANISM CONTROL)
ERASE HEAD
BIAS OSC Q370
A/B
T301
BIAS+9V Q378,380
13
11
15
14
65 TC-MUTE/IO-EXP DATA OUT 67 REC-MUTE 58 ALC SW VOL 95 TAPE MECHANISM DECK REC(FWD) B SHUT A SHUT 90 BSHUT 89 ASHUT 59 PB-A/B 56 REC BIAS SW LED 83
GNX880 CN102 3 SW VOL 4 LED-SW-ON SYSTEM CONTROL
BHALF AHALF ATRGM+ A TRIG DRIVE Q340, 343 B TRIG DRIVE Q342, 345 CAP MOTOR DRIVE Q341, 344
94 48 57 53
B-HALF A-HALF TC-RELAY A-TRIG
BTRGM+
55 B-TRIG
CAP M+ CN509 FM/AM TUNER UNIT ST-L FM 75 COAXIAL FM ANT ST-R R-CH ST-L
54 CAPM-CONT
E
MAIN SECTION (Page 29)
TUNED AM ANT AM AM ANT ANTENNA ST-DIN ST-DOUT ST-CLK ST-CE
88 TUNED 87 85 86 84 MC DOUT(ST) MC DIN(ST) ST-CLK ST-CE
· R-CH is omitted due to same as L-CH. · SIGNAL PATH
: TUNER (FM/AM) : PLAYBACK (DECK A) : PLAYBACK (DECK B) : RECORD
HCD-GNX780/GNX880
28
28
HCD-GNX780/GNX880
7-3. BLOCK DIAGRAM MAIN SECTION
IC1100
DIGTAL ECHO AD IN 23 25 DA OUT ECHO VOL
IC1101
MIC AMP
J1101(1/3) MIC 2
ALC 15 MC1P
MIC VOL
+
ALC MIC VOL
+
PRE LPF
ADC
ADPCM ENCODE
DELAY
ADPCM DECODE
DAC
S/H
POST LPF
+
POOUT
29
2
7
MIC OUT
J1100(1/3) MIC 1
J1100(3/3)
16
MC2P
REC-OUT-L
D
VOLUME CONTROL
J1101(3/3)
TAPE/TUNER SECTION (Page 28)
VOL1
VOL2
6
5 J1100(2/3) RV1101 MIC 2 LEVEL
VOL3
7 RV1100 ECHO LEVEL
R-CH 2 8
MIC
IC101
INPUT SELECT SWITCH, GRAPHIC EQUALIZER CONTROL, ELECTRICAL VOLUME IND1 5 INB1 4 INA1 3 INC1 6 7 INEX1 R-CH
RECB1
J1101(2/3)
RV1102 MIC 1 LEVEL
+
C A B C A B MID/ BASS & TREBLE VOLIN1 TOUT1 14 15 VOLUME CONTROL
SWOUT
24
OUT1 18
J101 MD/VIDEO AUDIO IN L R R-CH
BB-A1
16
SURROUND OR DPL BUFFER
TV AUDIO IN
L R R-CH
+
SAOUT
19
+
21
22
BB-B1
17
DATA
INPUT SELECT SWITCH
+
R-CH
COMMAND
CPU INTERFACE
CLK
Q101 TAPE/TUNER SECTION (Page 28) TAPE/TUNER SECTION (Page 28)
C E
TC-PB-L ST-L
A+9V
R-CH
SPEANA
F
DISPLAY/POWER SECTION (Page 31)
37 CD-R 40 41 VREF 2
38 GNX880 39 34 33 NC 32 NC
DBFB F/B
G
AMP SECTION (Page 30)
IC1500
MIXER
IC1501
DIGITAL DELAY Q1508
IC1505
MIXER L/R
OUTPUT L
IC1506
SELECTOR CCT 1 0Y 4 3Y 12 OX 11 3X
F-R
IC201
SURROUND VOL CONTROL VREF 11 4 3 VREF
VREF 35
R-CH MUTE Q180, 181 25 NC
F-L
CDG SECTION (Page 27)
A
CD-L
+
3
1
5 LPF1IN
LPF2OUT 9 LPF2IN 10
+
Q1506
5
7
Y COM 3 13 X COM 13 B A 9 10 OUTPUT R 6 10 NC 15 14
H
LINE-MUE SW OUT GNX880
12 NC 5 9 NC NC
AMP SECTION (Page 30)
3 LPF1OUT
OP2OUT 11 A OP2IN 12 Q1502
3
13
31 NC 30 29 NC
CLOCK 14
+
24
8 7
28 NC 27 26 NC
IC1503
MULTIPLEXER
3 COM A B C 11 10 9 BUFFER Q1509, 1510
22
LPF I/F DATA 17 18 CLOCK
23
LINE MUTE DRIVE Q544, 545
36 49 50
52
34
80
66
81
82
· R-CH is omitted due to same as L-CH. · SIGNAL PATH
: TUNER (FM/AM) : CD : TAPE PLAY : RECORD : MIC INPUT
EFFECTOR SELECT
M16530-CLK
EFFECTOR CTRL 1
M61529-DATA
EFFECTOR S0 EFFECTOR S1 EFFECTOR S2
LINE MUTE
IC401(3/5)
SYSTEM CONTROL
HCD-GNX780/GNX880
29
29
M61529-CLK
HCD-GNX780/GNX880
7-4. BLOCK DIAGRAM AMP SECTION
MAIN SECTION (Page 29) IC600 POWER AMP F-L 18 11 10 8 9 12 MUTING Q604, 606, 610 TH629 THERMAL DETECT Q628, 630
G
DBFB F/B
J1103 PHONES
D624
TM600
+
+
RY646 OVER LOAD DETECT Q668, 618 MUTING Q640, 641 PROTECT SWITCH Q666
+
RY665
F-R
14
+ + + + TM601
L FRONT SPEAKER R GNX880
L SURR SPEAKER R
STK MUTE
F-RELAY
MUTING CONTROL Q634,682
Q648
4 MAIN SECTION (Page 29)
CT
DC DET
VP
2 D550 1 HP-MUTE FAN DET FAN-ON
H
3 OUT OVER LOAD OCP
H/P DET
RELAY DRIVE Q644, 647
IC550 OVER CURRENT PROTECTOR
HI SPEED SWITCH Q581 GNX880 D812
FAN-K HI SPEED
FAN MOTOR DRIVE Q580,582,585
M
M891 DC FAN
FAN-CTL Q583, 584 VL(AC)
I J
DISPLAY/POWER SECTION (Page 31) DISPLAY/POWER SECTION (Page 31)
IC800 POWER AMP SW MUTE Q812 13 14 6 7 4 5
OVER LOAD DETECT Q800, 850
+ +
RELAY DRIVE Q814, 815 RY862
TM101 SUB WOOFER OUT
SW OUT MUTE Q810
11
LINE-MUTE
FAN-K
HP-MUTE
STK-MUTE
78
70
68
60
77
75
36
F-RELAY
76
SW RY/IO-EXP CLK
LINE/SURR-RLY
FAN HI SPEED
FAN KICK-OFF
STK-MUTE
HP-MUTE
SYSTEM CONTROLLER IC401 (4/5)
FR-RELAY
HD DETT
PROT
HP-DET
100
· SIGNAL PATH : FM
HCD-GNX780/GNX880
30
30
HCD-GNX780/GNX880
7-5. BLOCK DIAGRAM DISPLAY/ POWER SECTION
83 XIN X901 4MHz 82 XOUT Q905 KEY2 | KEY0
64 66
LED+9V S901 906, 1166 - 1170
9,10, 12 22, 24 41, 43 47
P1 36
P1 36
Q906 SELECTOR 80 Q904
Q907
IC902
DISPLAY CONTROL, KEY CONTROL
52 59, 72,78,79
FL901 FLUORESCENT INDICATOR TUBE
9395
G14-16
BUFFER Q901,902,914
G14-16
8 1, 100 96, 92-85
LED DRIVE Q908-913,915, 918,919,921
G1-13,G17-24
G1 13 G17-24
D908, 910, 911, 913, 914, 917, 919, 921, 923, 925, 1020 D909, 915, 916, 920, 922, 924, 926, 929, 930, 1017, 1145, 1153
VF1 VF2
D905 -VG (-32V) 48 VKK AMP SECTION (Page 30) D660, 661
J X
VL(AC) T1200 POWER TRANSFORMER F1261 +VL VL RECT D658 F1271 F1241 RECT D656 F1251 33V REGULATOR Q1264 R1292 VP D1292 RECT VF1 VF2 VF VF VL VL GND VH VH
IC904
BPF, RECT 2 IN2 MAIN SECTION (Page 29) SPEANA
16 15 14 13
68 BPF4 69 BPF3 70 BPF2 71 BPF1 67 ALL BAND IIC-DATA IIC-CLK RESET
F X
1 IN1 17
B
CDG SECTION (Page 27)
+VH VH
OPERATION DIAL
ROTARY ENCODER S1161
72 OPERATION DIAL
VG (-32V)
IC401 (5/5)
SYSTEM CONTROL TO FLUORESCENT INDICATOR TUBE FL901 D561 563 MT +7V LED+9V M +9V BIAS+3.3V A +9V TC +9V
MASTER VOLUME
ROTARY ENCODER S970
74 VOLUME
I2C DATA 60 I2C CLK 61 RESET 77
30 IIC-DATA 29 IIC-CLK 71 GC-RESET
IC561
+9V REGULATOR
IC560
+9V REGULATOR
F1281 AC3 RECT D560 AC3
D927 (R) D928 (G)
LED DRIVE Q903,917
IC562
72 STBY-LED/FAN CTL CD-POWER 32 +3.3V +3.3V REGULATOR
B+ SWITCH Q560, 561 JW1234 AC4 AC4 JW1204
AMP SECTION (Page 30)
X I
FAN CTL
S925
OVER VOLTAGE 63
NC NC
74 POWER-KEY
73 DISPLAY-KEY S900 DISPLAY STBY-RY 69 D3.3V B+ SWITCH Q504, 505 M+9V EVER +4V 15 X-IN X402 16MHz 13 X-OUT 10 XC-IN X401 32.768kHz 11 XC-OUT AC-CUT 20 RESET 12 RESET SWITCH Q501 1 POWER SWITCHING AC IN POWER ON/OFF RELAY DRIVE Q1200 RY1200
IC903
REMOTE CONTROL RECEIVER
4 SIRCS
D505
IC402
LEVEL DETECT
2
HCD-GNX780/GNX880
31
31
HCD-GNX780/GNX880
7-6. PRINTED WIRING BOARD BD84 BOARD
· See page 26 for Circuit Boards Location. : Uses unleaded solder.
1
2
3
4
5
6
7
8
9
10
11
A
BD84 BOARD (SIDE B) BD84 BOARD (SIDE A)
M M101 (SPINDLE)
C302
B
S101 (LIMIT)
IC303
3 4 1 5
C305 C303
C255
R405
C252
R404 R419 R403 R351 R353 R354 R352 C306 C313
C315 C316
R313 C257 R302 C314
C260
C
16 17
C307 R307
1 64
R306 R301
M
IC251
C312
R253
M102 (SLED)
IC301
C311
C258 C259 C308
C320
32
C309
49 33 48
R303 C310 R163 R409
C212
C317 R305 R410
C213
C318
FB301
R402 R401
CN201
C116
R251
C211
C251
R205
C184 C210
R165
R162 R191
C174 R173
TP117 (VC)
R411
R407
C163
R408
D
R252
R406 R412
C194
C183 R201
C182
C114 C113 R113 R114
JPO103 (TE1)
R182
C14
A
MAIN BOARD CN505 (Page 36)
C186
C196
C112
R112 C10
X171
C209
C18 R11 R12
R171 C171
C203
R161
C17
R111
C162
C195
IC101
R181 R204
C111 CN101
C161
C15
C11
R10 R13
R421
C16 Q10
1-864-566-
11 (11)
R132 C133 C132 R143 R141
C125
C134
F
R121 C123
E
C122
C124
C151
R151
R422
C143
R203 R142 C141 C142
R423
R131 C131
OPTICAL PICK-UP BLOCK (KSM-215DCP)
TP124 (RFAC)
R133
C185
R172
C181
E
C201
C172
JPO102 (FE1)
C115
1-864-566-
11 (11)
· Semiconductor Location
Ref. No. IC101 IC251 IC301 IC303 Q10 Location E-9 C-7 C-9 B-10 F-4
G
HCD-GNX780/GNX880
32
32
HCD-GNX780/GNX880
7-7. SCHEMATIC DIAGRAM BD84 BOARD · See page 54 and 55 for IC Block Diagrams. · See page 54 for Waveforms.
· See page 58 for IC Pin Function Description.
R131 1M C143 0.1 C142 0.0015 C131 100p C134 0.1
R121 15k C123 0.1 R12 100k C17 220 4V R13 1 R10 3.3 Q10 2SA2119K LD DRIVER E D A B C F CN101 16P C15 0.1
C307 0.1
R307 10k
R143 3.3k C308 47 4V R352 100 R354 100 MP3REQ R351 100 R353 100 C151 100 10V C141 0.1 R142 1k
C133 0.01 R133 180k C132 0.47
C125 0.1
R132 10k
JPO10 APC
TP124 (RFAC)
C16 1 R11 0
R151 0
C18 0.001 C122 0.1 C11 10 C10 10 C14 0.1
R141 4.7k
C124 330p
R303 100k
R405 100 R404 100 R419 100 R403 100
R302 10k
C309 0.1
C310 0.1 R301 100k C317 0.01 R305 100k
MIACK MICK MIDIO MILP MICS MP3STB C318 0.01
R203 0
R402 100
C320 0 C161 0.1
D C B A R111 1k C111 C112 C113 C114 0.0033 470p 0.0033 470p
JPO102
MP3RST R401 100
FEI
R113 1k
R112 15k R114 15k
IC301 TC94A34FG-002
R306 0 C316 0.0022
R313 220 C315 0.1 C313 0.1 C314 47 4V
C306 0.1
JPO103
C162 0.1 C172 27p X171 16.9344MHz R172 1M RF AMP, DSP, DAC R173 0 C171 22p R171 470 IC101 CXD3059AR
TEI
C115 0.1 C116 100 10V
F E
MP3 DECODER C311 0.1 IC303 BH15FB1WG C312 0.1
C174 0.1
TP117 (VC)
REG
C185 470p C186 470p
R181 100 R182 100
C183 22 6.3V C184 22 6.3V
R252 22k
R251 10k C303 0.1 C305 220 4V C302 0.1 FB301 0uH C181 0.1 C182 0.1 R161 100 C194 0.1 R165 0 C163 0.1 R191 0 C251 0.0068
S101 (LIMIT)
IC251 BA5947FM-E2
JPO004 MDP
C195 0.1
SL/SP MOTOR DRIVE C258 0.1 R253 10k
C259 0.1
CN201 31P
R162 47k
C210 0.1
R163 100
XLT CLOCK
XTACN
WFCK
SBSO EXCK XRST
MP3STB MP3REQ MIACK MICK MIDIO MILP MICS MP3RST R411 R410 R409 R408 R407 R406 R412 C213 22p 100 100 100 100 100 100 100 C212 22p C211 220p R201 0UH R205 0
C196 0.1
C209 0.01
C203 100 10V
C201 100 10V
SCOR
DATA
SENS
MAIN BOARD (3/3) CN505 (Page 39)
SCOR SENS CLOCK XLT DATA XRST XTACN
M101 (SPINDLE) C252 0.1 C257 0.1 M102 (SLED)
C260 220 10V R204 0UH R421 100 R422 100
C255 0.1
R423 100
WFCK SBSO EXCK
HCD-GNX780/GNX880
33
33
HCD-GNX780/GNX880
7-8. PRINTED WIRING BOARDS CD MECHANISM SECTION
· See page 26 for Circuit Boards Location.
: Uses unleaded solder.
1
2
3
4
5
6
7
SENSOR BOARD
A
CN731
DRIVER BOARD
R751 C752 JW712
G
C715
MAIN BOARD CN511 (Page 36)
SW BOARD
JW703 JW702
JW704
MOTOR(TB) BOARD
1 CN741 3
R736
R732
JW710
R734
R735
M741 (TABLE) M
C741
JW708 JW709 R713 1
IC712
9
R731
B
JW711
R733
12 1-687-132- (12)
JW707 JW706 JW705
2 1
CN705
C731
IC731
Q731 E
S751 (OPEN)
CN701
CN702
R711
CN742
R712
JW701
2 1
CN751
D711 R701
C
C737 C736 C735 R723 R722 R721
IC701
D701 1 9
1-687-669-
12 (12)
JW713
1-687-134-
2
1 CN704 4 1 CN703
JW714
12 (12)
C751
R702
1-866-201-
12 (12)
MOTOR(LD) BOARD
D
1 2 S711 ROTARY ENCODER
· Semiconductor Location
Ref. No. Location C-5 C-5 C-5 B-5 B-2 B-4 D701 D711 IC701 IC712 IC731
CN721
M
E
M751 (TABLE LOADING)
1-687-133HCD-GNX780/GNX880
12 (12)
Q731
34
34
HCD-GNX780/GNX880
7-9. SCHEMATIC DIAGRAM CD MECHANISM SECTION
· See page 54 for IC Block Diagrams.
IC701 BA6956AN
M751 (TABLE LOADING)
CN721 2P
CN704 2P
C751 0.01
R702 100 D701 MTZJ-T-72-5.1A R701 470 IC712 BA6956AN
IC731 RPI-576 M741 (TABLE) CN742 5P CN702 5P
C741 0.01
CN731 3P
R711 1k D711 MTZJ-T-72-3.6B R712 4.7k R713 22k
CN741 3P
C715 100 16V
CN701 13P
CN703 4P E1 E2 E3 CN711 4P
R736 390 MAIN BOARD (2/3) CN511 (Page 38) R731 100 R734 12k R732 10k Q731 DTC114ESA INVERTER R723 4.7k R722 4.7k R721 4.7k C731 10 50V C737 0.1 C736 0.1 C735 0.1 R751 4.7k C752 0.1
R733 1k
CN705 2P S751 (OPEN) CN751 2P
HCD-GNX780/GNX880
35
35
HCD-GNX780/GNX880
Ver. 1.1 7-10. PRINTED WIRING BOARD MAIN BOARD
1 2 3 4
(FOR CHECK)
· See page 26 for Circuit Boards Location.
5
DRIVER BOARD CN701 (Page 34)
: Uses unleaded solder.
8 9 10 11
EFFECTOR BOARD CN1501 (Page 48)
C521
6
PRIMARY BOARD CN1200 (Page 52)
7
CDG BOARD CN1001 (Page 50) CDG BOARD CN1003 (Page 50)
12
BD84 BOARD CN201 (Page 32)
13
14
G
J
R
N
A
(FOR CHECK)
MAIN BOARD
JW212 JW211 JW013 JW006 JW007 JW008 JW009
B
JW080
MIC BOARD CN1101 (Page 42)
TUNER PACK
H
A
C523 C520 JW130
JW188
FB509
R532
R582
JW057
JW058
JW170
JW201
R422 JR126 JR125
JW015
JW016 JW017 JW018 JW054
JW156
JW112
JW113
JW055 JW056
JW141
JW144
JW166
JW036
JW107
R426
R436
R431
JR121
R487
X402
R413
R412 C412 C411
321
C501
R502
JW109
R262
R450
R449
R423
JW145
31 30
E4
R503 C503
JR129
JR108
R107 C104
JW209
C112 JR119
D503 C502
JW049 JW052 JW053
JW063 JW064 JW065 JW066
C499 C498
JW219
R448
R406
JW062 JW400
C113
JW023
JW067
JW083
C101 JW149 JW136 R130 JW451
JW146
JW137
JW021 JW023 JW024 JW025 JW026
R132
R155
C567
JW399
JR117
R150
R452
IC401
R156
C206 C203
50 51
R505
D501 D504
R485
C
JW125
C568
JW134 JW133 JW132 JW127 JW222 JW128 JW129 JW160 JW161 JW162
IC562
R483
Q101 C149 R105 E R133 E Q151 C131
C109 R102 C110
R400
C107 R101 C106
C105
JW175 R116 JW199 C103 JW200 C153 C207 R204 R205 21
C205 JW184
C260 C261
R501 D505
NO403
R260 R261
C401 D403 D404
R472
R411
IC402
5
JW270
JW061
Q561 1 2 3 Q560 E
JW123 JW124
JW122 CN100
JW178
Q250 R251 R255
R266
E Q505
E
R560 R562 R563
JW140
JW148
R424
R420 R417
R252
R250
F
JW012
FB150 JW143
PANEL BOARD CN902 (Page 40)
R473 JW010 R530 R474 R573 JW002 JW011 JW224 JW226 JW003 R574
JW001
C419
R529
C534
JW181 C524 C522
R257
JW014
JW108
R434 JW210
JW119 JW121
B
JW114 JW115 JW116 JW117 JW118 JW397
CN508
JW142
R432
JW193
JW215
R433
CN504
JW135
R446 R444 R445 R443 R442 R571 R441 R538
R439
JW073 JW068
JW004
JW005
JW120
R440
R437 R438 CN511 R435 R428
JW094 JW097
JW452
JW111
1
13
2
1 JR123 C539
CN506
C525 CN505 1
JW189 JW191 31 JR115 C547
JW177
FB506
FB508
R513
JW079
NO402 1
4
JR101
JR120
CN402
R510
R511
R512
C538
FB510 C536 C537 FB512
JR124 JW190
IC210
JW419 C210 C211
CD DIGITAL OUT OPTICAL
CN560
C546
JW110
R425
R427
JW103
FB507
R488
JW138
R253 R256
R254
C416
D502
JW176
R430
JW019 JW020
1
17 CN512
R263
R267
R418 JR110
JW059
R429
Q504 E
JR107 R484
JW139
R421 R419 C417
C251 C250
R270 FB262
J101
R
C535
Q501
JR112
C410 R409 X401 R407 R405 R404 R403 1 R401 R402 100 R500
R492 JW050
R131
4
1
C108
C263 JR102 R271 JW186 JW187 C262 E R269 E Q251 R265 R264
FB263
L
TV
FB261
AUDIO IN R VIDEO/MD L
C264
R106 R103
R203 C202
JW202
C111 21
C115
R268 1 FB260 JW260 R221 C220 C204
R220
C464
C497
JW022
R104 1
C140
JW051
JW185 JW198 JW180
R119
R490
JW218
JW416
JW040
R587 R486
D
JW402 JW032
JW045
C163
JW313 JR122 JW409 JW168 JW169 C162
R153
JW171
C155
JW298 JW074
JW037
JW195 JW196
C160
C231
1 R478 R475
R570
JR131 JW038
C156
JW172
JW173
JW174
JW033 JR104
R342 R347 R348
JW075 JW076
JW126
JW046 JW047 JW048
JW095 JW096 JW098 JW179 JW100
C230 R228
Q583
JW391 JW392 JW433 JW434
R229
C405
E
C157
D401 D402
R469 JR113
JW164 JW165 JW223 JW167 JW415
R152 JW159
JW027 JW028 JW029 JW030 JW031
JW072
JW217
JR109
C116 R122
JW147
IC101
22 42
C154
C462
80 81
R585 R586
R592
JW039 JW041
JW043 JW042
R595
JW069 JW070 JW071
JW131 JW262 JW204 JW150 JW152 JW151 JW154 JW155 JW303 JW157 JW158
C150 C100 C281
C102 JW153 JW205
JW044
R493
(GNX880) CN102 1 CN102
R593
R121
IC201
22 42
NO401 3
D103 D104
R140
C280
C152
C221 JW203 4
SYSTEM CONTROL
R154 C159 JW351 R157
R166
C161
C158
C223 JW182
C222
R151
R495
Q345
JW082
R477 R476
JW084
JW259
E
E
R344
R463 R470
Q342 E
R346 Q341 E JW183
JW085 JW086
E
R345 R349 R341
E
SURROUND BOARD CN700 (Page 46)
R468
R489 R542 R546
R497 JW077
JW089
(GNX880) CN513
JW H0 01
Q343 R340
R343
Q344 JW035
D341
R108 JW354 JW352 JW561
JW208
I
Q340 E
C340
D340
D342
C341 JW227
R548
JW088 CN509 R295 R541 JR116 E R540 C540 C541 Q540
JW349
JW350 JW106 JW104 JW105
JW233
JW396
R294
Q541
E E C545
Q545 E Q544
JW092
JW090
R297 R296
R293
JW220
JW254 JW255
JW248
JW408
F
JW251
JW418
JW081
TAPE MECHANISM DECK
JW379
JW234 JW213 JW242
R272 JW228
JW093
JW230 JW229
R547
JW091
JW236 JW235
JW078
JW398
JW232
JW231
JW225
SURROUND BOARD NO801 (Page 46)
R273
· Semiconductor Location
Ref. No. D101 D102 D103 D104 D325 D340 D341 D342 D401 D402 D403 D404 D501 D502 D503 D504 D505 D550 D560 D561 D562 D581 D583 D584 IC101 IC201 IC210 IC301 IC401 IC402 IC550 IC560 IC561 IC562 Q101 Q151 Q180 Location J-13 J-13 D-9 D-9 I-14 E-3 E-3 E-3 D-5 D-5 C-3 C-3 C-5 C-5 C-5 C-5 C-6 I-12 I-8 G-9 G-10 H-13 H-13 H-13 D-10 D-12 A-14 H-5 C-4 C-5 I-12 H-9 H-9 C-6 C-9 C-8 J-10 Ref. No. Q181 Q250 Q251 Q325 Q340 Q341 Q342 Q343 Q344 Q345 Q370 Q371 Q372 Q373 Q374 Q375 Q376 Q377 Q378 Q379 Q380 Q381 Q382 Q383 Q501 Q504 Q505 Q540 Q541 Q542 Q545 Q560 Q561 Q580 Q581 Q582 Q583 Q584 Q585 Location J-10 C-12 C-13 J-13 E-2 E-4 E-3 E-2 E-3 E-2 J-4 I-3 I-4 I-4 I-4 I-4 I-4 I-5 I-5 I-5 J-5 I-5 H-5 H-5 C-5 B-6 C-6 E-5 F-4 E-5 F-5 C-7 C-6 H-12 H-13 H-13 D-4 H-13 H-13
C
R598 JW216 1 L101 3 + TM101
SUBWOOFER OUT
JW087
JW378
JW377
JW376
JW394
JW393
JW245 JW244 JW243
JW241
JW240
JW239 JW238 JW237
JW522
C544
JW420
JW421
JW372
JW373
JW274
(FOR CHECK)
JW371
R302 R309 R310 R304
R301
C306
R306
JW348 JW347 JW346
R339
R305
JW563
G
R312
JW276
R319 R303 C304
CN510
JW383 JW384 C311 C314
JW275
JW247
JW404 JW278 JW567
JW568
1
3
JW285 JW395 JW403
JW206 JW289 JW292 JW296 JW426
CN105
JW381
JW358 JW192 JW256 JW257 JW258 JW406 JW263 JW264 JW265 JW267 JW268 JW380
JW253
C308 R307 C307
L102
R599
JW355 L302 C312 JW343 R311 C356 JW342 C364 JW345 JW344
D561 JW279 JW280
D562 JW417 C564
R336
C303
R337 C305
JW412
JW430 JW390 JW341 JW340
R389
C309 1
C301 JR127 JW370
IC301
C351
C581
IC561
JW407 3 2 1
C565
IC560
JW293
JW273
JW277
JW287
R594
JW385
JW286
JW288
R308
R397 JW357 JW356 R393 R369
Q585
R577
3 CN503 C382 C310
JR130
C381
TAPE A HEAD
JW369 JW368 JW367 C359
R351 C353
H
R355 R353
R352 JW359
JW281 3 2 1 JW284 C563 JW282 JW221
JW290
Q584 E
CN580 1 3 R578 Q581
JW197
M891 DC FAN
Q582 E E JW295 JW501 D584 E
D583
C354
Q381 R380 R391
C562
JW566
JW294 JW411
JW360
C383
C385
TAPE B HEAD
I
JW324 JW323 JW322
JW327
JW326
JW321 JW320
R185
R184
J
R183 CN501 CN502 EPT561
R182
JW312
R180
E
R187 R186
R181
Q383 R385 R387 Q382 E C376 E E E R396 E E 8 1 Q376 Q375 Q374 R390 JW365 Q373 Q379 E E Q372 R399 R382 E E JW361 Q371 Q377 C380 R383 E R384 R381 JW362 R376 L371 R372 L370 R373 Q378 C372 R375 C370 E R395 R371 R374 JW364 C373 E R377 R378 Q370 L372 E C374 Q380 JW450 T301 CN507 C375
R370 C371 JR114 C378 C377 R379 R386 C379
JW366
R354 C355
JW325
NO503 6 JW335 JW334 JW333 JW332 1
C552 C561 C560 C566 JW401
R575 JW375 D550 C553 C550
C580
JW339 R388 JW338 JW387
D581 JW389 JW422 JW425 JW424 JW423
JW431
R356
R357 C361
JW291 Q580 E
2 R112
R111
4 5
C384 R392 C386
D560
JW319 JW302 JW318 JW163
1 3 D325
R325
J103 G-LIGHT SYNC
C551
JW301 JW300 JW299
3
IC550
1 4 6 JW297
R394
JW331 JW428
JW329 JW328
JW308 JW307
JW317
JW316
JW315
JW432
C181 Q181 Q180
C180 E
JW413
JW310
JW337 JW363
JW336
JW304
Q325 E JW429 D102 D101
EPT560
1-868-763K
11
K
TRANS BOARD CN1213 (Page 52)
D
PA BOARD CN600 (Page 44)
E
PA BOARD CN601 (Page 44)
HCD-GNX780/GNX880
36
36
HCD-GNX780/GNX880
Ver. 1.1 7-11. SCHEMATIC DIAGRAM MAIN BOARD (1/3)
· See page 54 for Waveforms.
MAIN BOARD (2/3) (Page 38) MAIN BOARD (3/3) (Page 39)
EVER+3.3V BUS8 LED+9V
CD MUTE
DBFB FB REC-OUT-R
CD POWER UNREG
D GND REC-OUT-L TC-PB-R TC-PB-L GND
SW OUT
GND D GND BUS7
BUS6
M+7V
R-OUT
JW568
D562 10EDB40 D561 10EDB40 C181 4.7 50V C180 4.7 50V
JW567 R185 1k 37 CN509 11P R273 10k Q341 2SB1132 CAP MOTOR DRIVE R294 4.7k R297 3.3k R272 22k R296 4.7k R293 47k R295 3.3k GNX880 CN102 4P SYSTEM CONTROL R108 1 95 83 Q342 2SB1132 B TRIG DRIVE C341 0.0047 R342 2.2k R348 680 R347 2.2k R337 10k R336 6.8k 0.5% R339 22k C311 10 50V 48 89 94 D341 1SS355WTE-17 Q344 DTC114EKA CAP MOTOR DRIVE 90 R341 3.3k R346 680 Q541 DTC114EKA CD MUTE DRIVE C541 1 50V R540 68k C540 1 50V Q540 DTA124EKA CD MUTE DRIVE 54 R541 15k C544 1 50V R542 470k R547 15k C565 0.1 C545 1 50V R546 68k Q544 DTA124EKA LINE MUTE DRIVE 66 Q545 DTC114EKA LINE MUTE DRIVE Q181 2SD2114K MUTE
R187 10k
R186 10k
L-OUT
A+9V
3.3V
B+
R184 1k R183 47k R182 47k Q180 2SD2114K MUTE
R181 10k IC561 BA09T
R180 10k
R345 3.3k
R349 3.3k
+9V REGULATOR
R548 470k
C562 100 16V
JW566
R495 100
IC560 BA09T
D342 1SS355WTE-17
+9V REGULATOR
Q345 DTC114EKA B TRIG DRIVE Q340 2SB1132 A TRIG DRIVE C340 0.0047 D340 1SS355WTE-17 R340 2.2k
B-TRG
55 C314 0.0022 R319 2.2k R303 10k R304 2.2k R305 47k C306 2.2 50V IC301 HA12237F
60 72
C563 470 10V
C564 0.1
C566 4700 25V
CN502 8P
R344 680 R343 2.2k
R302 4.7k
C303 0.1
CN510 3P (FOR CHECK)
Q343 DTC114EKA A TRIG DRIVE
A-TRG
53
R301 3.3k C301 0.012
C304 10 50V C305 1 50V
97 78 75
PA BOARD CN601 (Page 45)
C309 47 35V C382 1200p C310 10 50V CN503 3P CN507 8P Q376 2SD2704K SWITCH Q375 2SD2704K SWITCH R387 2.2k C381 1200p R385 2.2k Q382 DTA114EKA SWITCH DRIVE
DECK A/B SELECT, PB/REC EQUALIZER AMP Q584 DTC114EKA BUFFER C308 470 10V C312 10 50V 67 65
Q585 2SD2525 R577 10k
C581 0.1
CN580 3P
M891 DC FAN
R306 22k
R594 330 2W
R307 1M C307 10 50V R308 100
L302 100uH R575 1k Q580 2SC2712-YG R311 0 R578 1k
D581 UDZSTE-176.2B Q582 2SC2712-YG D583 UDZSTE-176.8B
C376 680p C375 680p
C580 0.1
R310 100
59
R309 4.7k
Q374 2SD2704K SWITCH
Q377 2SA1235 SWITCH DRIVE R384 2.2k R390 10k R399 10k R383 2.2k R396 10k Q383 DTC114EKA SWITCH DRIVE C351 0.012 R351 3.3k R382 2.2k R381 2.2k L371 27mH C354 10 16V C355 1 50V C353 0.1 R356 6.8k 0.5% C359 47 35V R312 100
58
D584 HZU2.0BTRF
Q373 2SD2704K SWITCH
Q581 2SC2712-YG HI SPEED SWITCH
Q372 2SD2704K SWITCH Q371 2SD2704K SWITCH
70
C356 2.2 50V
IC550 RT8H015C-T112-1 C552 2.2 50V
57 C364 0.0022 Q379 DTC114EKA SWITCH DRIVE R388 6.8k 0.5% R392 10k C386 0.022 Q381 DTC114EKA BUFFER R369 2.2k R353 10k R352 4.7k
R354 2.2k
R355 47k
R357 10k
R389 22k
C361 10 50V D550 1SS355WTE-17
OVER CURRENT PROTECTOR
R376 4.7k R375 10k
C380 120p
R393 2.2k
C384 330p
C553 1000 25V
R397 2.2k EPT560 C550 100 16V L372 100uH C551 0.1
R373 4.7k R372 10k C372 0.001 R371 4.7k R370 3.3k C373 0.001 R374 4.7k
L370 27mH C378 120p C383 330p
R380 6.8k 0.5%
R391 10k C385 0.022
R386 33
Q378 RT1P137P-TP-1 SWITCH
IC562 TA78033LS
Q560 RT1P137P B+ SWITCH
JW561 CN560 2P VCC GND
R395 47k C371 0.0047 C370 0.01 100V T301 R377 47 R378 10k C377 0.01 Q370 2SD596DV345 BIAS OSC C379 0.0068 R379 10 R394 4.7k Q380 DTC114EKA SWITCH 56
+3.3V REGULATOR R562 2.2k R563 2.2k Q561 DTC114EKA B+ SWITCH
R560 2.7k
N
CDG BOARD CN1003 (Page 51)
77 76
68 78
C374 47 35V
GNX880 CN513 9P
C568 1000 6.3V
C567 0.1
CN501 13P
HCD-GNX780/GNX880
PA BOARD CN600 (Page 45)
SURROUND BOARD CN700 (Page 47)
37
37
HCD-GNX780/GNX880
Ver. 1.1 7-12. SCHEMATIC DIAGRA